Domain Mapping issues on one site

Can you please assist me as I have an issue with one site which when mapped displays nothing. If the mapping is removed it points to the multisite install.
Other sites on the multisite network are displaying correctly.

The domain is: http://www.theyogaeffect.co.uk/

The network link: http://theyogaeffect.hardtechsolutions.co.uk

DNS settings as follows:
* A 217.160.93.138 
@ A 81.21.76.62
@ MX 10 mx0.123-reg.co.uk.
 @ MX 20 mx1.123-reg.co.uk.
www A 217.160.93.138